(2alpha,5alpha,17alpha)-2-Ethynyl-A-norpregn-20-yne-2,17-diol 1045-30-3 2,17,Diethynyl-2,17-dihydroxy-A-norandrostane A-Norandrostane-2alpha,17alpha-diethynyl-2beta,17beta-diol A-Norpregn-20-yne-2,17-diol, 2-ethynyl-, (2alpha,5alpha,17alpha)- Dicyclopenta(a,f)naphthalene-1,7-diol, 1,7-diethynylhexadecahydro-8a,10a-dimethyl-, (1R,3aS,3bR,5aS,7S,8aS,8bS,10aS)-